Transmission apparatus



M. T. VOIGT.

TRANSMISSION APPARATUS.

APPLICATxoN FILED 1AN.30. 1920.

Patented Oct. 10, 1922.

2 SHEETS-SHEET l.

1M-mow am J MMM ATTohNEYs SEIS WIT

M. T. VOIGT.

TRANSMISSION APPARATUS. APPLICATION FILED IAN.30, 1920.

Patented oct. 10,1922.

2 SHEETS-SHEET 2r nnltlluupl. im I WI TNE ATTORNEY-5' Patented Oct'. 10,1.922'.

lUNITI-:D srA'rs '1,431,198 PATENT oFFlcls.`

:ux T. voler, or READING, PENNSYLVANIA; AssIeNoa ToLoUIs rnANxEr., or

NEW Yoan, N. Y. v

TRANSMISSION' APPARATS.

Application mea January 3o, 1920. serial no. $55,141.'

To alZ'whomz't/may concern.'

Be it known that I, MAX T. Voler, -a citizen of Germany, and a residentof Reading, in the county of Berks and State of Pennslyvania, havevinventedfa certain new from, and to means wherebyr any one of saidmechanisms' may be individually connected to, or disconnected from' theline shaft without eiecting any other of the mechanisms, and moreparticularly to sewing machine benches or tables in which a number ofmachines are operated from a single line shaft located below the bench,and to which thel sewing machines may be connected to operate the latterat the will of the individual operator.

v The objects of the invention are to pro-v -';..1ff.vide a devicevwhich yis compact, having. alining means for the line shaft, forreducing friction of the loperating parts of the transmission devices.wherein the speed ratio between the line shaft and the sewing majiehinelmay be easily varied, to provide for 4free-running of the line shaftand the trans-v mission apparatus, to provide anti-friction means fortaking the thrust of the shaft, and having means for universaladjust-ment 1 of the line shaft and the devices carried 35 thereby.

These and further objects will more fully appear in the followingspecilication and accompanying drawings considered together orseparatel@ne embodiment of the invention is illustrated in the accompanyingdrawings, in which like parts in all of the several figures aredesignated by similar characters of reference, and in which Fig. 1 is adiagrammatic side elevation of a portion of a sewing machine Work benchprovided with my invention.

Fig. 1* is a detail side elevation of a pedal. j I

Fig. 2 is a detail side elevation, on an enlarged scale, of atransmission` apparatus.

Fig. 3 is Fig. 2.

a section on the line 3 3 of lthreaded opening in the plate 11.

Fig. 4 is a transverse section taken on the line 4 4 of Fig. 3.

Fig. 4: is a slmilar view taken on the line L a of Fig 3, and l Fig. 5is a similar view taken on the line 5 5 of Fi 2.

In the drawings 1 designates the usual sewing machine work bench onwhich is carried la plurality of sewing machines 2. The sewing machinesare spaced apart a distance sufficient for the operation of each machineby a differentoperator.`

Mounted beneath the bench 1 and extending longitudinally thereof vis aline shaft 3 to which power may be applied in any desired manner. Theline shaft 'is preferably positioned in proximity to the under sidesections secured together in more or less axlal almement by means ofcouplings 4.

The sections are preferably of such a length that the transmissionmechanism `for each machine 2 will be carried on a separate shaftsection.

Secured to the under side of the bench 1 and adjacent each machine 2 isa bracket 5 carryinga bearing member 6. The lmember 6 is provided on oneface with a semi- Icircular groove 7, and a cap 8 adapted to be securedto the member 6 by means of bolts or screws 9 is-prdvided with a similargroove which, when the cap is in position, will register with the groovein the member 6 to produce a cylindrical socket.

Carried within the socket formed in the member 6 and the cap 8 is a stem10 which is frictionallyheld in position in the socket. The lower'end`of the stem carries a plate 11 to which is secured, by means of a bolt12, a hanger 13. The bolt 12 passes through a cylindrical perforation 14in an extension 15 of the hanger, and is threaded into a A stud bolt 16carried in a threaded opening in the extension 15 passes through asegmental slot 17 in the plate as shown in Fig; 4. By

` loosening the bolts 12 and 16 the hanger 13 -within which is a hub 19'on trunnions 20. At one end the hub car- The hanger 1,3 comprises astirrup 18 pivotally mounted latter on the shaft 3.

A disc 23 having an elongated tubular hub 24 is mounted uponV theextending portion of the bushing 22 and is freely movable relativelythereto. The disc 23 is provided with an annular, conical flange 25which is adapted to form the external member or drum of a Y clutch, theinternal member 26' of which is rigidly secured to the shaft 3 with itshub 27 in engagement with the end of the bushing l22. The member 26carries on its periphery the usual leather or other elastic surface forengagement with the drum 25.

Rigidly but removably secured `to the clutch member 23 by means of bolts28 'is a pulley 29 from which a sewing machine 2 may be driven by meansof a. belt 30. y The pulley 29 is preferably of the split variety andthe members thereof are secured together to form a circular Astructureby the bolts 28, by which the segments of the pulley are secured to theclutch member 23. The pulley may therefor be readily removed and anotherof a different diameter substituted. Rigidly secured to the hub 24 ofthe clutch member 23 by means of bolts 32 is al hub 33 one end of whichcarries a conical brake member 34 adapted to `be brought intocooperative relation. with the brake member 2 carried by the hub 19.1

A ball race 35 adapted to carry a series of balls 36 encircles the hub24 of the clutch member 23. The balls 36 are interposed between the ballrace 35 and an annular element 37 having a driving fit on the hub 24.The ball race 35 is formed in agring 38 which is supported on the balls36.

The ring 38y is held in position relatively tothe element 35 by means ofa pair of diametrically oppositely disposed flat shoes 39 which bearagainst the end of the ring and against the opposed end of the hub 33.The shoes are pivotally carried between the jaws 40-40 of a lever 41pivoted at 42 on an extension 43 of the hanger 13. The lever 41 has anelongated arm 44 at an angle thereto and said arm is attached to a pedal45 by means of a pitman 46. Each jaw 40 of the lever 41 is connected bymeans of a spring 47 with the hanger 13 as, for example, to thetrunnions 20 which may extend through the hanger, as shown.

The bearing for each shaft section, when a sectional shaft be employed,is in the bushof the shaft can have no effect on these members when theclutch member 23 is disengafged from the member 26. This feature is ofimportance for the reason that when the movable elements of the clutchand brake have their bearings on the rotating shaft there is alwaysdanger that these elements will freeze or' stick to the shaft and throwthe machines into operation, often with serious consequences.

The springs 47 will hold the brake mem bers 21 and 34 in appliedposition and the clutch members 23 and 26 disengaged except when thepedal is operated to connect the sewing machine with the shaft tooperate the former.

Itis to, be understood that in the preferred embodiment of the inventionall of the element-s below the bench 1 except the lever arm 44, thepitrnan 46 and the pedal are enclosed in suitable casings, as is known,to prevent accidents due to the clothing of the operator being caught inthe moving parts.

The operation of the device is obvious from the above description.

. In laccordance with the provisions of the patent statutes theprinciple of the invention, has been described together with theapparatus which is now considered to represent the best embodimentthereof, but it is understood that the apparatus shown is merelyillustrative, and that the invention mag be carried out in other ways.

f aving now described the invention what is claimed, and desired to besecured by Letters Patent, is z- 1. An apparatus of the characterdescribed, comprising a constantly rotating shaft, a bearing for theshaft, a pulley carried on the bearing and adapted to rotate relativelythereto, a clutch member carried by the shaft, a clutch member carriedby the pulley, means for engaging the members. and means movable axiallyof the shaft for automatically disengaging the members.

2. An apparatus of the character described, comprising a constantlyrotating shaft, a support for the shaft, a tubular element carried bythe support, the bore of said element forming the bearingof the shaft, apulley, the exterior of said element forming the bearing for the pulley,means for clutching the pulley to the shaft whereby said shaft andpulley will rotate in unison, a

Ibrake member movable axially of the shaft,

shaft, a support for the shaft, a tubular ele- -ment carried by thesupport, th'e bore of said element forming the bearing for the shaft, apulley, the exterior of said element forming the bearing for the pulley,means for clutching the pulley to the shaft whereby said shaft andpulley will rotate in unison, and connections between 'the sup ort andpulley movable axially of the shaft for releasing the clutching means.

4. An apparatus of the character described, comprising a constantlyrotating shaft,a support for the shaft, a tubular element carried by andextending longitudinally from the support, the bore of said elementforming the bearing of the shaft, a pulley, the exterior of said elementforming the bearing for the pulley, an annular brake member carried bythe support,an annular brake member carried by the pulley, means forlclutching the pulley to the shaft whereby said shaft and pulley willrotate in unison, and connection between the support and pulley forreleasing the clutching means and engaging the brake'members.

5. An apparatus of the character de i scribed, comprising a constantlyrotating shaft, a support for the shaft, a tubular element .carried byand extending longitu-l dinally fromvthe support, the bore of, saidelement forming the bearing of theshaft, a pulley, the exterior ofsaid.v element forming the bearing for the pulley, an annular brakemember carried by the support, an-annular brake member carried by the4pulley, means for clutchin the pulley to the yshaft where-- by said shat and pulley will rotate in unison, and connections between the supportand pulley for simultaneously releasing the clutching means and engaginmembers, there being an anti-,friction device between the applying meansand braking and clutching devices.

the brake f said element forming the bearing for the shaft, a clutchmember secured to the shaft, a body surrounding and carried by androtatable relatively to the element, a clutch member carried by thebody, a brake member carried by the body, means for moving the body toengage the clutch members and cause the body to rotate in unison withthe sha-ft, and meansfor automatically moving the body to release theclutch member carried thereby and to engage the brake member to arrestthe rotation` of the body,I

7. Anv apparatus of the character vde-l scribed, comprising a constantlyrotating shaft, a support for the shaft, a brake member secured tothesuppor't, a tubular element secured to the support, surrounding theshaft and extending longitudinally thereof, said element forming thebearing for the, shaft, a clutch member secured to the shaft, a bodysurrounding and carried by and rotatable relativelyt to the element, aclutch member carried by the body, a brake mem.- ber carried by thebody, means for moving the body to engage the clutch members and causethe body to rotate in unison with the shaft, and oppositely disposedmeans for automatically moving the body to release the clutch membercarried thereby and to engage ,the brake member and arrest the rotationof thexbody.

8.' An apparatus of the character d escribed, comprising a constantlyrotating shaft, a support for the shaft, a brake member secured to thesupport, a tubular element secured to the support, surrounding the shaftc and'extending longitudinally thereof, lsaid element forming thebearing for the shaft, a clutch member secured to the shaft, a bodysurrounding and carried by and rotatable. relatively to the element, aclutch memberJ carried by the body, a brake Vmember carried bythe body;means for moving the body to i 6. An apparatus of the character deb dscribed, comprising a constantly rotating shaft, a support for theshaft, a brake member secured to the support, 'a tubular element securedto the support, surrounding the shaft and extending longitudinallythereof,

' MAX T. VO'IGT. Witnesses :F i.

'DAVID FRANKEL, f Loms FRAmmL.;

